US9163565B2 - Valve flap device - Google Patents
Valve flap device Download PDFInfo
- Publication number
- US9163565B2 US9163565B2 US13/068,722 US201113068722A US9163565B2 US 9163565 B2 US9163565 B2 US 9163565B2 US 201113068722 A US201113068722 A US 201113068722A US 9163565 B2 US9163565 B2 US 9163565B2
- Authority
- US
- United States
- Prior art keywords
- valve
- valve flap
- shaft
- housing
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active, expires
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/04—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/222—Shaping of the valve member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0218—Butterfly valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49405—Valve or choke making
- Y10T29/49412—Valve or choke making with assembly, disassembly or composite article making
- Y10T29/49416—Valve or choke making with assembly, disassembly or composite article making with material shaping or cutting
Definitions
- the invention relates to a valve flap device for an exhaust system of a motor vehicle, comprising at least one tubular valve housing with a flow cross section running perpendicular to a central axis and being formed by the inner geometry and a shaft which can turn about a valve axis with a valve flap mounted on the shaft, being mounted in the valve housing to close the flow cross section.
- valve flap devices with a tubular cast iron housing having valve flaps mounted by a shaft to control the flow through them.
- the throttle devices described in EP 835 998 A1 and in DE 20 2008 005 992 U1 have tubular cast iron throttle housings that have been machined to produce the final geometry.
- the basic problem of the invention is to configure and arrange a valve flap device and its fabrication method such that it can be made with low material input and at the same time with low fabrication expense at low costs.
- valve housing is made from a tubular blank of sheet metal with a tube diameter that is calibrated to the flow cross section at least partially by mechanical, plastic forming.
- the original pipe blank used for the calibration does not have the required flow cross section, at least partly or entirely, and is brought into the necessary shape by the calibration.
- the pipe blank being a standard structural part, is cheap in price and the calibration is likewise a cheap method of forming, so that a simple valve housing can be made with little material expense.
- the calibrated inner geometry may have at least one basic inner diameter and in addition in the region of the valve flap a height reduced from the basic diameter in the direction of the valve axis, so that the pipe blank starting from the pipe diameter is decreased and/or increased to the particular dimension of the inner geometry.
- the pipe blank after the deformation is plastically upset or plastically stretched by the collet chucks of the calibration tool.
- the region of reduced height is formed as a plateau on either opposite side of the valve axis, the plateau surfaces being formed at right angles to the valve axis. The plateaus serve as bearing surface for the mounting of the shaft and the valve flap.
- the shaft has a bearing surface for a mounting in the radial direction to the valve axis and a shaft shoulder for a mounting in the axial direction to the valve axis.
- a bearing housing is secured to the valve housing by form-fitting and/or material integrated bonding, in which the shaft is arranged.
- a bearing element is provided to mount the shaft in the bearing housing with a sliding bearing surface for the bearing surface and with an abutting surface for the shaft shoulder, the bearing element being able to move in both axial directions in the bearing housing.
- a spring element is provided, by which the bearing element is biased in the axial direction against the shaft shoulder relative to the bearing housing.
- valve flap is mounted in the valve housing in the axial and in the radial direction to the valve axis by a bearing pin, the bearing pin being arranged on the valve flap relative to the shaft.
- This bearing can be accomplished by the above-described spring element in combination with the shaft, because the bearing pin is biased in the direction of the valve axis by the valve flap.
- the shaft via a first coupling disk and a spring relative to the valve housing in the direction of an open position and it is coupled in form-fitting manner to a drive shaft by a second coupling disk disposed coaxially to the first coupling disk, wherein the two coupling disks have a play between 15° and 35° in the circumferential direction about the valve axis.
- the rigid separation of the drive system in circumferential direction about the valve axis is realized in this way in a manner where the two coupling disks can simply be inserted one in the other, thanks to the relatively large play, and no further adjustment of the drive connection is needed.
- the torque of the drive shaft for closing the valve flap in the valve housing is transmitted by the spring to the shaft, so that the drive after the closing of the valve flap could continue to turn for a few degrees without the stopping of the valve flap being transmitted to the drive shaft.
- An adjustment of the drive system in regard to a rigid stop in the closed position of the valve flap is thus not necessary.
- the basic principle of the coupling disks thus involves a drive system in which the angular acceleration of the spring is greater than the angular acceleration of the drive shaft, so that the two coupling disks always lie against each other.
- valve flap may have an essentially round or oval contour adapted to the inner cross section of the valve housing and to be formed from a single or multiple-layered metal sheet, and for the valve flap to have at least one crimp and/or a curved zone in the marginal region that sticks out in at least one direction relative to a surface plane of the valve flap. Thanks to such a profiling of the valve flap, one can achieve good stiffness with very few sheet thicknesses and thereby create a geometry that behaves advantageously with respect to possible vibrations induced by the exhaust gas flow.
- the curved zone may have a bending edge running at least partly about the valve flap and the bending edge is fashioned as a sealing surface that can be placed against the valve housing.
- the valve flap in the closed position can preferably subtend an angle a of around 110° with the valve axis, while the bending edge subtends an angle b of around 55° with the valve flap, which is around 15° smaller than the difference of 180° minus angle a. In this way, the bending edge of the valve flap lies against the valve housing only in linear fashion.
- the crimp and/or the curved zone can be fashioned in mirror symmetry to the valve axis or in point symmetry to an intersection of the central axis and the valve flap.
- valve flap and/or the valve housing In terms of a simple layout, it can be advantageous for the valve flap and/or the valve housing to have a thickness between 0.6 mm and 3.0 mm.
- valve flap In combination with the stabilizing profile it can be advantageous for the valve flap to have a perforation and/or an opening or for the valve flap to have a base surface smaller than the flow cross section of the valve housing. In this way, it is possible to convert, in particular, an engine with 8 cylinders to 4 cylinders and thus to a smaller exhaust gas flow.
- bearing housing and valve housing are joined together by form-fitting and/or by material integrated bonding;
- valve flap is joined to the shaft by form-fitting and/or by material integrated bonding.
- the required biasing is transmitted here from the shaft to the valve flap and the bearing pin, for which the valve flap lies against the shaft in the direction of the valve axis.
- the bearing housing can be secured to the valve housing by resistance welding or by gluing or with rivets.
- projection welding as a special method of resistance welding enables a joining process with very little heat input, no welding spatter and no welding add material.
- FIG. 1 a representation of a valve flap device with a valve housing in a cross section parallel to a central axis with a drive device in a drive housing and a spring for coupling the shaft to a drive shaft;
- FIG. 2 a detailed view of FIG. 1 ;
- FIG. 3 a sectional view in the direction of the central axis of the drive housing and the valve housing, which are joined by a bridge housing;
- FIG. 4 the valve housing fabricated from a calibrated pipe blank (shown by dotted line) in a cross section parallel to the central axis;
- FIGS. 5 a to 8 b each a top view of the profiled valve flap, alongside of which in a sectional view is shown the course of the profile curved in the marginal region and embossed in the central region;
- FIG. 9 a basic diagram of the geometry of the curved zone of the valve flap in relation to the valve housing
- FIG. 10 an alternative mounting of the valve flap with a second bearing housing
- FIG. 11 a simplified representation of two coupling disks in top view.
- FIG. 1 shows a valve flap device with a calibrated valve housing 6 , in which a shaft 1 is mounted by a bearing element 4 in a bearing housing 2 , at the end 13 of which is provided a seat 12 , on which a valve flap 5 is secured with a bearing pin 3 .
- the cross section runs parallel to the valve housing 6 , i.e., in the direction of flow of the medium toward the central axis 62 .
- the valve flap 5 turns about a valve axis 10 in a turning range of up to 90 degrees.
- the shaft 1 is connected to a drive shaft 80 .
- the shaft 1 has a bearing surface 14 , by which the shaft 1 is mounted so as to turn about the valve axis 10 in the radial direction to the valve axis 10 .
- a separate bearing element 4 is provided in the form of a sliding bearing bushing, which is mounted in the bearing housing 2 and entirely surround the circumference of the shaft 1 with the sliding bearing surface.
- the bearing element 4 is pressed or biased by a spring element 7 fashioned as a pack of plate springs in a direction parallel to the valve axis 10 against a shaft shoulder 11 .
- This biasing is transmitted by the shaft 1 to the valve flap 5 and by the bearing pin 3 .
- the bearing element 4 and the bearing pin 3 produce a two-point bearing in this way, which absorbs radial and axial forces in relation to the valve axis 10 .
- the valve housing 6 has a recess 60 in which the bearing pin 3 is mounted, as also shown in FIG. 4 .
- the bearing element 4 In order to ensure the required biasing of the bearing element 4 , the bearing element 4 is mounted so that it can move in the axial direction in the bearing housing 2 . In the direction of the shaft shoulder 11 , the bearing element 4 lies by its abutment surface against the shaft 1 . But in order to achieve a defined mounting, the bearing element 4 is secured against twisting about the valve axis 10 in the bearing housing 2 by form fitting, so that no significant relative movement can occur in the circumferential direction between the bearing element 4 and the bearing housing 2 .
- the bearing housing 2 has a shoulder 20 , against which the plate spring pack 7 lies in the axial direction, i.e., in a direction parallel to the valve axis 10 .
- the shoulder 20 is diminished relative to the inner diameter of the bearing housing 2 and at the same time forms a housing opening 23 , through which the upper end 15 of the shaft 1 is led in the direction of a driving device 8 .
- FIGS. 3 and 4 the calibrated valve housing 6 is shown more closely.
- the pipe blank 65 is brought to the necessary dimensions for the valve housing 6 by calibration, i.e., by a plastic reduction of its diameter.
- the required inner dimensions are a base diameter 61 at the two end faces and a height 63 between the two plateaus 66 , 66 ′, which are likewise calibrated.
- the above-described bearing housing 2 is fastened on the upper plateau 66 .
- a recess 60 for the bearing pin 3 is calibrated in the lower plateau 66 ′.
- the drive device 8 shown in FIG. 1 comprises, besides the drive shaft 80 , which is connected by a spring 9 to the shaft 1 in a way elastic to rotation, a bridge housing 81 , shown more closely in FIG. 3 , by which the valve housing 6 is joined to a drive housing 82 .
- the drive housing 82 is closed at the top by a housing cover 83 , which has a seat 830 for a power supply.
- the bridge housing 81 is placed on the valve housing 6 , shown more closely in FIG. 3 .
- the shaft 1 is driven by the drive shaft 80 of a motor (not shown).
- a spring 9 and two coupling disks 17 , 84 are provided according to FIG. 1 .
- the shaft 1 is biased by the spring 9 and the first coupling disk 17 in the valve housing 6 in a way such that the spring would turn the valve flap 5 to the closed position if the shaft 1 were not driven to open by the drive shaft 80 .
- the second coupling disk 84 is connected to the drive shaft 80 so that the torque is transmitted from the drive shaft 80 via the second coupling disk 84 and the first coupling disk 17 to the shaft 1 .
- the two coupling disks 17 , 84 are divided into three segments in the circumferential direction, which intermesh with each other, as shown in FIG. 11 .
- a play of several degrees is provided between the individual segments in the circumferential direction, so that the two coupling disks 17 , 84 can easily intermesh in the direction of the valve axis 10 .
- FIGS. 5 a to 8 b different valve flaps 5 are shown in a front view, having an essentially round or oval contour adapted to the inner cross section of the valve housing 6 with different base surfaces.
- Fig. a left shows the top view of the valve flap 5 and
- Fig. b right a sectional view AB per Fig. a.
- the valve flap 5 has various crimps 50 to increase the stability and therefore, due to increased stiffness, also improve the tightness relative to the valve housing 6 per FIGS. 6 a to 8 b , which stick out relative to a surface plane 52 of the valve flap 5 in the direction of the central axis 62 .
- This profiling in the form of crimps increases the stiffness and allows for thinner sheet metal for the valve flap 5 .
- curved zones 51 are provided in the margin region, which stick out relative to the surface plane 52 of the valve flap 5 in the direction of the center axis 62 .
- the particular curved zone 51 has a bending edge 53 running at least partly about the valve flap 5 , which is designed as a sealing surface and can be placed against the valve housing 6 .
- the curved zone 51 according to FIGS. 5 b , 6 b and 8 b alternately runs in both directions around the center axis 62 or is alternately curved so that the valve flap 5 is sealed on both sides with the corresponding sealing surface.
- the crimps 50 are also differently oriented so that the valve flap 5 is fashioned with point symmetry relative to the intersection of the center axis 62 and the valve flap 5 .
- the curved zone 51 as well as the crimp 50 protrude in the same direction of the center axis 62 , so that the valve flap 5 is configured with mirror symmetry relative to the center axis 62 .
- FIG. 10 shows a bearing variant without a bearing pin 3 , in which the shaft 1 is mounted by a second bearing element 4 ′ and a second bearing housing 2 ′.
- the valve flap 5 here is secured to the valve flap 5 , and a curved zone 51 is also provided here.
- the lower second bearing housing 2 ′ is placed on the lower plateau 66 ′ and joined to the latter.
Abstract
Description
Claims (16)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE202010006961.0 | 2010-05-19 | ||
DE202010006961 | 2010-05-19 | ||
DE202010006961U | 2010-05-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20110297862A1 US20110297862A1 (en) | 2011-12-08 |
US9163565B2 true US9163565B2 (en) | 2015-10-20 |
Family
ID=45063765
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/068,722 Active 2034-04-02 US9163565B2 (en) | 2010-05-19 | 2011-05-18 | Valve flap device |
Country Status (2)
Country | Link |
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US (1) | US9163565B2 (en) |
DE (1) | DE102011101948B4 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9540995B2 (en) | 2012-03-06 | 2017-01-10 | KATCON USA, Inc. | Exhaust valve assembly |
DE102016110998A1 (en) | 2016-06-15 | 2017-12-21 | Fischer Rohrtechnik Gmbh | Throttle valve assembly and method of making a throttle assembly |
DE102015122036A1 (en) * | 2015-12-16 | 2017-06-22 | Fischer Rohrtechnik Gmbh | Throttle valve arrangement for an exhaust line or a supply air line of an internal combustion engine |
JP6721351B2 (en) * | 2016-01-29 | 2020-07-15 | 株式会社ミクニ | Valve device and exhaust heat recovery system |
DE112017007999T5 (en) * | 2017-09-05 | 2020-06-04 | Faurecia Systemes D'echappement | Valve with rattle protection, exhaust pipe with such a valve and method for producing such a valve |
FR3080426B1 (en) * | 2018-04-24 | 2020-04-03 | Faurecia Systemes D'echappement | METHOD OF ASSEMBLING A VALVE FOR AN EXHAUST LINE AND CORRESPONDING VALVE |
DE102018123400A1 (en) * | 2018-09-24 | 2020-03-26 | Eberspächer Exhaust Technology GmbH & Co. KG | Exhaust flap |
DE102021101135A1 (en) * | 2021-01-20 | 2022-07-21 | Purem GmbH | coupling arrangement |
DE102021101134A1 (en) * | 2021-01-20 | 2022-07-21 | Purem GmbH | coupling arrangement |
IT202100004703A1 (en) * | 2021-03-01 | 2022-09-01 | Marelli Europe Spa | MOTORIZED BUTTERFLY VALVE FOR AN EXHAUST LINE |
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DE102004032856A1 (en) | 2004-07-07 | 2006-02-02 | Faurecia Abgastechnik Gmbh | Flap valve for the exhaust system of a motor vehicle |
DE102004032845A1 (en) | 2004-07-07 | 2006-02-02 | Faurecia Abgastechnik Gmbh | Automotive exhaust pipe flap valve has sliding shaft located in external blind arm with spring and sealing disc |
US7503544B2 (en) * | 2004-07-07 | 2009-03-17 | Faurecia Abgastechnic Gmbh | Flap valve for a motor vehicle exhaust system |
DE102004032974A1 (en) | 2004-07-08 | 2006-02-02 | Faurecia Abgastechnik Gmbh | Flap valve for exhaust system of motor vehicle, has flap held on one bearing point so that it can move in direction parallel to its plane and at right angles to axis of rotation |
US20060157663A1 (en) * | 2004-07-22 | 2006-07-20 | James Rauch | Throttle body and method of assembly |
US20070034820A1 (en) * | 2005-08-12 | 2007-02-15 | Murphy Mark A | Drain valve |
EP1887200A1 (en) | 2006-08-09 | 2008-02-13 | Hamilton Sundstrand Corporation | Valve assembly |
DE202007006463U1 (en) | 2007-05-03 | 2008-09-11 | Capristo, Antonio | Throttle and exhaust system equipped with it |
DE202008005992U1 (en) | 2008-04-30 | 2008-08-14 | Friedrich Boysen Gmbh & Co. Kg | flap valve |
WO2010108620A1 (en) | 2009-03-24 | 2010-09-30 | Mtu Friedrichshafen Gmbh | Flap assembly, in particular exhaust gas flap assembly |
Also Published As
Publication number | Publication date |
---|---|
DE102011101948B4 (en) | 2016-08-11 |
DE102011101948A1 (en) | 2011-12-29 |
US20110297862A1 (en) | 2011-12-08 |
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